Journal ArticleDOI
Hierarchical “nanoroll” like MoS2/Ti3C2Tx hybrid with high electrocatalytic hydrogen evolution activity
TLDR
In this article, a simple strategy to synthesize the hierarchical MoS2/Ti3C2Tx hybrid by combining liquid nitrogen-freezing and subsequent annealing was reported.Abstract:
Developing highly efficient noble-metal-free electrocatalysts for hydrogen evolution reaction (HER) has attracted increasing attentions. Here, we report a simple strategy to synthesize the hierarchical “nanoroll” like MoS2/Ti3C2Tx hybrid by combining liquid nitrogen-freezing and subsequent annealing. The quick freezing of the Ti3C2Tx nanosheets and ammonium tetrathiomolybdate mixture causes a sudden change in the strain of Ti3C2Tx, which leads to an interesting “nanoroll” like hierarchical structure. After annealing at H2/Ar atmosphere, vertically aligned molybdenum sulfide (MoS2) crystallites are in situ formed in and on the nanoroll like Ti3C2Tx. Notably, this hierarchical MoS2/Ti3C2Tx hybrid exhibits excellent HER catalytic activity with a small onset overpotential of 30 mV, and a more than 25-fold increase in the exchange current density compared with MoS2 was observed.read more
Citations
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Journal ArticleDOI
2D TiVCTx layered nanosheets grown on nickel foam as highly efficient electrocatalysts for the hydrogen evolution reaction
Yi Wen,Junsheng Yang,Hao Zou,Yiquan Fan,Jie Liu,Y. Kuang,Wenkang Liu,Kaisong Zhang,Lieqiang Xiong +8 more
TL;DR: In this paper , a three-dimensional (3D) TiVCTx-based conductive electrode was constructed by depositing 2D VCTx nanosheets on 3D network structured nickel foam (NF) to synthesize a hybrid electrode material.
Proceedings ArticleDOI
Conductive coatings of 2D MXene-in water for electronics applications
TL;DR: In this article, the Ti3C2Tx based MXene was prepared by in situ HF etching method and was coated on various substrates through simple methods such as dip coating, drop casting and vacuum filtration.
Journal ArticleDOI
Photocatalytic water splitting from MXene and substoichiometric molybdenum oxide ultrathin nanowire Schottky heterojunction
TL;DR: In this article , the authors reported direct photocatalytic hydrogen evolution from substoichiometric MoO3-x ultrathin nanowires using sacrificial triethanolamine.
Journal ArticleDOI
Advances in MXenes synthesis and MXenes derived electrocatalysts for oxygen electrode in metal-air batteries: A review
TL;DR: In this article , the MXenes, 2D new materials emerging family carries a lot of potential as electrocatalysts in MABs because of their exceptional combination of hydrophilicity, higher electrical conductivities, and tunable surface properties.
Journal ArticleDOI
Recent trends in MXenes hybrids as efficient 2D materials for photo- and electrocatalysis hydrogen production
Gowhar Ahmad Naikoo,Hatim Salim,Tasbiha Awan,Israr Ul Hassan,M. A S Tabook,Mona Zamani Pedram,Mujahid Mustaqeem,T. Saleh +7 more
TL;DR: In this paper , a review of MXenes for the hydrogen evolution reaction (HER), band structure, and their hydrophilic nature is presented, along with the major technical challenges, advantages, and disadvantages with critical scientific developments to alleviate these challenges and focus toward the ultimate goal of developing of advance MXenes as efficient photocatalysts.
References
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Journal ArticleDOI
Identification of active edge sites for electrochemical H2 evolution from MoS2 nanocatalysts.
Thomas F. Jaramillo,Kristina Pilt Jørgensen,Jacob Lindner Bonde,Jane Hvolbæk Nielsen,Sebastian Horch,Ib Chorkendorff +5 more
TL;DR: The active site for hydrogen evolution, a reaction catalyzed by precious metals, on nanoparticulate molybdenum disulfide (MoS2) is determined by atomically resolving the surface of this catalyst before measuring electrochemical activity in solution.
Journal ArticleDOI
2D metal carbides and nitrides (MXenes) for energy storage
TL;DR: More than twenty 2D carbides, nitrides and carbonitrides of transition metals (MXenes) have been synthesized and studied, and dozens more predicted to exist.
Journal ArticleDOI
MoS2 Nanoparticles Grown on Graphene: An Advanced Catalyst for the Hydrogen Evolution Reaction
TL;DR: In this article, a selective solvothermal synthesis of MoS2 nanoparticles on reduced graphene oxide (RGO) sheets suspended in solution was developed, which exhibited superior electrocatalytic activity in the hydrogen evolution reaction (HER).
Journal ArticleDOI
Conductive two-dimensional titanium carbide ‘clay’ with high volumetric capacitance
TL;DR: This capacitance report reports a method of producing two-dimensional titanium carbide ‘clay’ using a solution of lithium fluoride and hydrochloric acid that offers a much faster route to film production as well as the avoidance of handling hazardous concentrated hydrofluoric acid.
Journal ArticleDOI
Cation Intercalation and High Volumetric Capacitance of Two-Dimensional Titanium Carbide
Maria R. Lukatskaya,Olha Mashtalir,Chang E. Ren,Yohan Dall'Agnese,Patrick Rozier,Pierre-Louis Taberna,Michael Naguib,Patrice Simon,Patrice Simon,Michel W. Barsoum,Yury Gogotsi +10 more
TL;DR: This study demonstrates the spontaneous intercalation of cations from aqueous salt solutions between two-dimensional (2D) Ti3C2 MXene layers, and provides a basis for exploring a large family of 2D carbides and carbonitrides in electrochemical energy storage applications using single- and multivalent ions.